package com.wangzhixuan.commons.intercept;

import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.DateFormat;
import java.util.*;
import java.util.regex.Matcher;

/**
 * 自定义基础拦截器
 * @author wangkan
 */
@Intercepts({
    @Signature(type = Executor.class, method = "update", args = {MappedStatement.class, Object.class}),
    @Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class,
            RowBounds.class, ResultHandler.class})})
public class MybatisSqlInterceptor implements Interceptor {
	 private static final Logger logger = LoggerFactory.getLogger(MybatisSqlInterceptor.class);
	    private static final Logger sqlLogger = LoggerFactory.getLogger("mybatisSql");



	    private static String [] companyIdNames = new String[]{"COMPANY_ID"};

	    @Override
	    public Object intercept(Invocation invocation) throws Throwable {
	        try {
	            MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];

	            //0.sql参数获取
	            Object parameter = null;
	            if (invocation.getArgs().length > 1) {
	                parameter = invocation.getArgs()[1];
	            }

	            //1.获取sqlId
	            String sqlId = mappedStatement.getId();
	            BoundSql boundSql = mappedStatement.getBoundSql(parameter);

	            Configuration configuration = mappedStatement.getConfiguration();

	            //获取真实的sql语句
	            String sql = getSql(configuration, boundSql, sqlId, 0);


	            //2.判断是否有companyId
	            if (hasOfficeId(sql,companyIdNames)) {
	                sqlLogger.warn("{}", sql);
	            } else {
	                sqlLogger.debug("{}", sql);
	            }
	        } catch (Exception e) {
	            logger.error(e.getMessage(), e);
	        }
	        return invocation.proceed();
	    }


	    /**
	     * 判断sql语句中是否包含companyId字段
	     * @param sql sql语句
	     * @return
	     */
	    private boolean hasOfficeId(String sql,String[] officeIdNames) {
	        //companyId 的可能名称
	        if (sql == null || sql.trim().length() == 0) {
	            return false;
	        }

	        String afterWhereStatement = sql.toUpperCase().substring(sql.indexOf("where"));

	        for (String officeIdName : officeIdNames){
	            if(afterWhereStatement.indexOf(officeIdName) > 0){
	                return true;
	            }
	        }

	        return false;
	    }

	    @Override
	    public Object plugin(Object o) {
	        return Plugin.wrap(o, this);
	    }

	    @Override
	    public void setProperties(Properties properties) {


	    }


	    private static String getSql(Configuration configuration, BoundSql boundSql,
	                                 String sqlId, long time) {
	        String sql = showSql(configuration, boundSql);
	        StringBuilder str = new StringBuilder(100);
	        str.append(sqlId);
	        str.append(":");
	        str.append(sql);
	        return str.toString();
	    }

	    private static String getParameterValue(Object obj) {
	        String value = null;
	        if (obj instanceof String) {
	            value = "'" + obj.toString() + "'";
	        } else if (obj instanceof Date) {
	            DateFormat formatter = DateFormat.getDateTimeInstance(
	                    DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.CHINA);
	            value = "'" + formatter.format(new Date()) + "'";
	        } else {
	            if (obj != null) {
	                value = obj.toString();
	            } else {
	                value = "";
	            }

	        }
	        return value;
	    }

	    private static String showSql(Configuration configuration, BoundSql boundSql) {
	        Object parameterObject = boundSql.getParameterObject();
	        List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
	        String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
	        if (!parameterMappings.isEmpty() && parameterObject != null) {
	            TypeHandlerRegistry typeHandlerRegistry = configuration
	                    .getTypeHandlerRegistry();
	            if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
	                sql = sql.replaceFirst("\\?",
	                        Matcher.quoteReplacement(getParameterValue(parameterObject)));

	            } else {
	                MetaObject metaObject = configuration
	                        .newMetaObject(parameterObject);
	                for (ParameterMapping parameterMapping : parameterMappings) {
	                    String propertyName = parameterMapping.getProperty();
	                    if (metaObject.hasGetter(propertyName)) {
	                        Object obj = metaObject.getValue(propertyName);
	                        sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(obj)));
	                    } else if (boundSql.hasAdditionalParameter(propertyName)) {
	                        Object obj = boundSql
	                                .getAdditionalParameter(propertyName);
	                        sql = sql.replaceFirst("\\?", Matcher.quoteReplacement(getParameterValue(obj)));
	                    } else {
	                        sql = sql.replaceFirst("\\?", "缺失");
	                    }//打印出缺失，提醒该参数缺失并防止错位
	                }
	            }
	        }
	        return sql;
	    }


	
	
	
}
